Emitter on which events can be listened to.
Events that can currently be listened to:
'full': Emitted when the pool is dynamic and full.'busy': Emitted when the pool is busy.'ready': Emitted when the number of workers created in the pool has reached the minimum size expected and are ready.'busy': Emitted when the number of workers created in the pool has reached the maximum size expected and are executing at least one task.'full': Emitted when the pool is dynamic and the number of workers created has reached the maximum size expected.destroy': Emitted when the pool is destroyed.'error': Emitted when an uncaught error occurs.'taskError': Emitted when an error occurs while executing a task.'backPressure': Emitted when all worker nodes have back pressure (i.e. their tasks queue is full: queue size >= pool maximum size^2).Protected Readonly fileProtected Readonly numberProtected Readonly optsProtected promiseThe execution response promise map.
+ +The task execution response promise map.
key: The message id of each submitted task.value: An object that contains the worker, the execution response promise resolve and reject callbacks.Private Readonly startThe start timestamp of the pool.
+Private Readonly startingWhether the pool is starting or not.
+Protected workerWorker choice strategy context referencing a worker choice algorithm implementation.
-Default to a round robin algorithm.
Readonly workerReadonly Internal workerPool worker nodes.
Protected fullProtected Abstract maxPool maximum size.
+The pool maximum size.
Protected Abstract minPool minimum size.
+The pool minimum size.
Private readyThe pool readiness boolean status.
+Protected Abstract typePool type.
+The pool type.
If it is 'dynamic', it provides the max property.
Private utilizationThe approximate pool utilization.
+The pool utilization.
+ +Protected Abstract workerGets the worker type.
+The worker type.
Private addAdds the given worker in the pool worker nodes.
+The worker.
+The added worker node key.
+ +https://nodejs.org/api/errors.html#class-error If the added worker node is not found.
+Protected afterHook executed after the worker task execution. Can be overridden.
@@ -332,43 +416,43 @@ Can be overridden.The worker.
+The worker node key.
The received message.
Protected Abstract afterProtected afterFunction that can be hooked up when a worker has been newly created and moved to the pool worker nodes.
-Can be used to update the maxListeners or binding the main-worker<->worker connection if not bind by default.
Method hooked up after a worker node has been newly created. +Can be overridden.
The newly created worker.
+The newly created worker node key.
Protected beforeHook executed before the worker task execution. Can be overridden.
@@ -380,11 +464,16 @@ Can be overridden.The worker node key.
The task to execute.
+Private buildPrivate checkProtected checkPrivate checkPrivate checkChecks if the worker id sent in the received message from a worker is valid.
+The received message.
+https://nodejs.org/api/errors.html#class-error If the worker id is invalid.
+Private checkPrivate checkPrivate checkPrivate checkPrivate checkProtected choosePrivate chooseProtected createProtected createProtected createCreates a new worker and sets it up completely in the pool worker nodes.
+Creates a new, completely set up worker node.
New, completely set up worker.
+New, completely set up worker node key.
+Protected Abstract createReturns a newly created worker.
+Creates a new worker.
Newly created worker.
+ +Private dequeueShutdowns every current worker in this pool.
+Terminates all workers in this pool.
Protected Abstract destroyProtected Abstract destroyShutdowns the given worker.
+Terminates the worker node given its worker node key.
A worker within workerNodes.
The worker node key.
Private enqueueExecutes the specified function in the worker constructor with the task data input parameter.
Optional data: DataThe task input data for the specified worker function. This can only be serializable data.
+The optional task input data for the specified task function. This can only be structured-cloneable data.
Optional name: stringThe name of the worker function to execute. If not specified, the default worker function will be executed.
+The optional name of the task function to execute. If not specified, the default task function will be executed.
+Optional transferList: TransferListItem[]An optional array of transferable objects to transfer ownership of. Ownership of the transferred objects is given to the pool's worker_threads worker and they should not be used in the main thread afterwards.
Promise that will be fulfilled when the task is completed.
@@ -629,25 +772,34 @@ Can be overridden.Private executeExecutes the given task on the worker given its worker node key.
+The worker node key.
+Private flushProtected flushPrivate flushPrivate getProtected getGets the worker information given its worker node key.
+The worker node key.
+The worker information.
+ +Private getThe worker node key if the worker is found in the pool worker nodes, -1 otherwise.
The worker node key if found in the pool worker nodes, -1 otherwise.
Private getPrivate handlePrivate handlePrivate hasProtected internalProtected Abstract isPrivate pushProtected Abstract registerRegisters a listener callback on the given worker.
+Registers a listener callback on the worker given its worker node key.
The worker which should register a listener.
+The worker node key.
Private removeProtected sendProtected Abstract sendPrivate sendProtected Abstract sendSends a message to the given worker.
+Sends a message to worker given its worker node key.
The worker which should receive the message.
+The worker node key.
The message.
Optional transferList: TransferListItem[]The optional array of transferable objects.
+The worker choice strategy.
Private setProtected setupSets the given worker in the pool worker nodes.
-The worker node key.
-The worker.
-The worker tasks usage.
-The worker task queue.
+Setup hook to execute code before worker nodes are created in the abstract constructor. +Can be overridden.
Private setPrivate shallPrivate shallSets the given worker node its tasks usage in the pool.
+Whether the worker node shall update its task function worker usage or not.
The worker node.
-The worker node tasks usage.
+The worker node key.
true if the worker node shall update its task function worker usage, false otherwise.
Protected setupPrivate startPrivate tasksPrivate updatePrivate updatePrivate updatePrivate updatePrivate updatePrivate updateProtected workerThis function is the listener registered for each worker message.
+This method is the listener registered for each worker message.
The listener function to execute when a message is received from a worker.
@@ -1000,19 +1327,19 @@ Can be overriddenThis function is the listener registered for each worker message.
+This method is the listener registered for each worker message.
The listener function to execute when a message is received from a worker.
Generated using TypeDoc
Type of data sent to the worker. This can only be serializable data.
+Type of data sent to the worker. This can only be structured-cloneable data.
Response = unknown
-Type of execution response. This can only be serializable data.
+Type of execution response. This can only be structured-cloneable data.
@@ -66,6 +66,8 @@ number